发明名称 |
Process for producing polycarbonate resin having specific terminal OH/CO value |
摘要 |
There is provided a process for producing a polycarbonate resin containing less amounts of a terminal OH group and a residual monomer and having excellent heat resistance efficiently with a simple equipment. Said process comprises emulsifying an oligomer-containing reaction mixture obtained by the reaction of an alkaline aqueous solution of an aromatic dihydroxy compound with phosgene in the presence of an organic solvent, after adding a molecular weight modifier thereto, and performing polymerization while the reaction mixture is allowed to stand still in the emulsified state.
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申请公布号 |
US5319065(A) |
申请公布日期 |
1994.06.07 |
申请号 |
US19930048586 |
申请日期 |
1993.04.19 |
申请人 |
TEIJIN CHEMICALS, LTD. |
发明人 |
KIKUMOTO, SHINJI;OKUYAMA, HIROKI;MANABE, AKIYOSHI;ITO, HIDEKAZU |
分类号 |
C08G64/22;B01J19/18;C08G64/00;C08G64/14;C08G64/24;(IPC1-7):C08G64/20 |
主分类号 |
C08G64/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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